1.

A 180 m long train crosses a man standing on the platform in 6 seconds. What is the speed of the train?1. 90 km/hr2. 108 km/hr3. 120 km/hr4. None of the above

Answer» Correct Answer - Option 2 : 108 km/hr

Given:

Length of train = 180 m

Time taken to cross platform = 6 seconds

Formula required:

Speed = Distance/Time

To convert m/s into km/h multiply by 18/5

Calculations:

Speed = 180/6

⇒ 30 m/sec

Convert m/sec in to km/hr

30 × 18/5

⇒ 108 km/hr

∴ The speed of train is 108 km/hr



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